Circulating-valve.



No. 758,822. PATENTED MAY 3, 1904. J. GOLLIS. OIRGULATING VALVE.

APPLICATION rum) JAN. 20, 1903. nnnnwsn MAR. 12, 1004.

no MODEL.

r m w 1 W W s M W 7 M W. W r, m mzgw M M r. w M u m 1 c W E 6 K V n u m LII UNITED STAT S Patented May 3, 1904.

JOHN COLLIS, OF DES MGINES, IOlVA.

ClRCULATlNG-VALVE.

SPECIFICATION formingpart of Letters Patent No. 758,822, dated May 3, 1904.

Application filed January 20,1903. Renewed March 12, 1904. Serial No. 197,890- (No model.)

To (4/! /1/0720 it may concern:

Be it known that I, J OHN CoLLIs, a citizen of the United States, residing at Des Moines, in the county of Folk and State of Iowa, have invented certain new and useful Improvements in (irculating-"alves, of which the following is a specification.

The objects of my invention are to provide a circulating-valve of simple, durable, and inexpensive construction, especially designed for use in connection with radiators employing either hot water or steam, the latter being under low pressure or operating in a partial vacuum.

My invention consists in certain details in the construction, arrangement, and combination of the various parts of the device whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claim, and illustrated in the accompanying drawings, in which- Figure 1 shows a vertical longitudinal sectional view of the complete valve and by dotted lines indicating the position of the valve proper when open. Fig. 2 shows an edge view of the valve proper with a portion of the valve-stem connected therewith. Fig. 3 shows in perspective the valve proper and the detachable plate fixed thereto to illustrate the circulating-openings therein.

Referring to the accompanying drawings, the valve-casing is seen to be composed of a scrcw-threzuled inlet 10, a screw-threaded outlet ll beneath the inlet, and a body portion 12, with which both the inlet and the outlet portions communicate, which body portion has at its top a large opening through which the valve proper may be passed.

The numeral 13 indicates the portion of the casing through which it communicates with a radiator, and in the central portion of this part of the casing is an integral horizontal partition 14. Between the body portion 12 and the part 13 of the casing isa circular valve-seat 15, arranged at an acute angle relative to a vertical line through the valve. Formed on the interior of the valve-casing body 12 is an integral lug 16, designed to provide a support for the valve proper.

The numeral 17 indicates a disk having on one face a dovetailed groove 18 and having at one edge two lugs 19, designed to receive the lug 16 between them, so that the disk may be pivotally connected with disk 17 by means of the pin 20. Slidingly mounted in the dovetailed groove 18 is a beveled block 21, and the valve-stem 22 is pivoted to said block. On the opposite face of disk 17 is another disk, 23, preferably made of soft metal and detachably connected with disk 17 by means of the screws 2%. The said disk 23 is designed to rest against the valve-seat when the valve is closed. The object in providing a softmetal disk is so that the disk may adapt itself to any unevenness on the valve-seat 1'5, and thus prevent leakage.

As before stated, the opening in the top of the casing-body is larger than the diameter of the valve proper, thus providing for the removal of the valve through this opening. Screwed into this opening is a bonnet 25,11aving a central opening through which the valvestem passes. On top of the bonnet is a screwcap 26, and a packing-box 27 is provided between said bonnet and cap. Surrounding the opening at the bottom of the bonnet 25 is a recess 28, and formed on the valve-stem near its lower end is a collar 29. These parts are so arranged that when the val vc-stem is pulled to its upper limit of movement the said collar 29 will enter the recess 28, and thus prevent passage of steam through the opening in the bonnet. Hence the cap 26 may be removed even though the valve is tilled with a heating fluid under pressure, and the packing in the packing-box 27 may be renewed without the leakage of the heating fluid interfering with the operation of renewing the packing, the valve-stem being held to its upper limit of movement until the packing is replaced and the cap screwed to position.

A short pipe-section 30 is connected with the part 13 of the valve-casing by means of a union 31, and a horizontal partition 3). is formed in the central portion of this pipe-section 32 and designed to stand in line with the partition 14. These partitions are designed to aid in preventing the hot and cold layers of the heating fluid at the top and bottom, respectively, of the top 30 from becoming commingled and the flow interrupted at this point.

In Fig. 3 of the drawings I have shown in perspective the disk attached to the valve, illustrating the circulating-openings 33 and 3 arranged to permit a slight circulation of the heating medium through the radiator pipe when the valve is closed. In said disk is a circulating-opening 33 below its center and the circular opening 34 above its center, so that even when the valve is shut a small quantity of the heating medium may pass through the said openings in both directions.

In practical use it is obvious that the valvecasing is of simple, durable, and inexpensive construction and may be cast complete in one piece. The valve proper may readily be placed in position and the pin 20 inserted through the opening in the top of the valve-casing, as this opening is large enough to admit the operators fingers. When the valve is inposition, the valve-stem is passed through the bonnet and pivoted to the sliding block 21. Then the bonnet is screwed in position,and the valve is readily used. Riser and return pipes are screwed into the openings 10 and 11, and the radiator is connected to the pipe-section 30. To open the valve, it is only necessary to raise the valve-stem, and this may be done by hand or by means of a fluid-pressure motor or in any ordinary way. When the valve-stem is raised, the sliding block 21 will move upwardly in the dovetailed groove, and the valve will be elevated, the valve-stem maintaining its vertical position at all times, and when the valve-stem is raised to its upper limit of move.

ment the sliding block will stand in the centcr of the valve, as shown by dotted lines in Fig. 1. The circulation of heating medium will be complete through the valve to the radiator, no matter how much or how little the valve maybe open, for as soon as the valve is opened to the slightest degree the heating medium will rise above the partition 14 and return through below the partition and pass out through the opening 11, so that any desirable quantity of heating medium may be admitted to the radiator past the valve. When the valve is closed, a slight circulation of the heating medium will be permitted through the radiator both above and below the partition 14:, such circulation being desirable to prevent freezing of the radiators.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States therefor, is

An improved circulating-valve, comprising a valve-casing having openings at one side to receive respectively riser and return pipes, also having an opening at its opposite side to communicate with a radiator and also having a large screw-threaded opening at its top, a circular valve-seat formed on the interior of the casing and arranged at an acute angle relative to a vertical line, said seat surrounding the opening communicating with the radiator, a disk-valve hinged within the casing to engage the said valve-seat when in one position, said disk having a dovetailed groove and also havinga circulating-opening therein, a detachable plate on the side of the valve opposite from the groove, having an opening therein to communicate with the opening in the valve-disk, said plate designed to engage the valve-seat, a dovetailed block sliding-1y mounted in the dovetailed groove, a valvestem pivoted to the block, a bonnet screwed into the opening at the top of the valve-casing and having an opening therein through which the valve-stem may pass, a cap screwed to the top of the bonnet and forming with the bonnet a packing-box and a rim on the valve-stem to engage the under surface of the bonnet when the valve-stem is at its upper limit of movement, all arranged and combined substantially in the manner set forth and for the purposes stated.

JOHN COLLIS. Witnesses:

S. F. CHRIs'rY, W. R. LANE. 

